How to Install a Dishwasher: What You Need to Know Before Buying
Thinking about getting a dishwasher? Before you buy, it's worth understanding the installation requirements — so you're not surprised by extra costs or complications after the purchase.
Types of Dishwashers and Their Installation Needs
Freestanding Dishwashers
These sit on the floor and have a finished top surface, so they don't need to be built into cabinetry. They're the most flexible option — you can position them wherever you have access to water and a power outlet.
Installation requirements:
- Cold water inlet connection (usually under the sink)
- Drain hose connection (runs to sink drain or waste pipe)
- 230V power outlet nearby
- Minimum 60cm space width (or 45cm for slimline models)
Built-In (Integrated) Dishwashers
Designed to sit inside a kitchen cabinet with a matching panel to blend with your joinery. These provide a clean, seamless kitchen look but require a cabinet opening and usually professional installation.
Installation requirements: Same water and power requirements as freestanding, plus a matching door panel and cabinet cutout to the right dimensions.
Semi-Integrated Dishwashers
A middle ground — fits into the cabinet but the control panel is visible at the top. Less expensive than fully integrated.
Do You Need a Plumber?
In Australia, connecting water supply and drain lines is typically straightforward plumbing work. For a freestanding dishwasher replacing an existing one, an experienced handyperson can often do it. For a first installation with no existing connections, you'll need a licensed plumber to run the water inlet and drain.
Dishwasher installation is not covered by gas plumbing or electrical licensing requirements, but the electrical outlet must be properly installed by a licensed electrician if one doesn't already exist in that location.
What to Measure Before Buying
- Width: Standard = 60cm, Slimline = 45cm. Measure your space carefully
- Height: Adjust dishwasher feet to fit your cabinetry height (usually 81–87cm adjustable)
- Depth: Standard depth is 60cm. Check clearance from open to closed
- Water inlet location: Where is the nearest connection point?
- Power outlet: Is there a 230V outlet within reach?
Water Pressure Requirements
Dishwashers need a minimum water pressure of 50kPa and maximum 1,000kPa. Sydney's mains water pressure is typically 200–500kPa — within range for all standard dishwashers.
What About Existing Kitchens Without a Dishwasher Space?
Many older kitchens don't have a dedicated dishwasher space. Options include:
- Remove a base cabinet to create space (usually a 60cm cabinet)
- Use a benchtop dishwasher (small, sits on the counter, connects to tap)
- Position a freestanding unit at the end of a run of cabinetry
Browse Dishwashers at Oceania Appliances
We carry freestanding and integrated dishwashers at our Wetherill Park showroom, including quality-tested second-hand units.
Oceania Appliances
2/14 Centre Place, Wetherill Park NSW 2164
Phone: 0481 243 211
Open 7 days, 10am – 8pm
Free delivery across Sydney